Credit: The Associated Press

Toby Clairmont, the Hawaii Emergency Management Agency's executive officer, shows new informational materials to a reporter in Honolulu on Friday, July 21, 2017. Hawaii announced a new public education campaign to prepare for the possibility of a ballistic missile strike from North Korea. (AP Photo/Jennifer Sinco Kelleher)

Credit: The Associated Press

Hawaii Emergency Management Agency Administrator Vern Miyagi, left, and Toby Clairmont, the agency's executive officer, show new informational materials to a reporter in Honolulu on Friday, July 21, 2017. Hawaii announced a new public education campaign to prepare for the possibility of a ballistic missile strike from North Korea. (AP Photo/Jennifer Sinco Kelleher)

Credit: The Associated Press

Hawaii Emergency Management Agency Administrator Vern Miyagi, left, and Toby Clairmont, the agency's executive officer, discuss a new public education campaign about the missile threat from North Korea in Honolulu on Friday, July 21, 2017. Hawaii is the first state to prepare the public for the possibility of a ballistic missile strike from North Korea. (AP Photo/Jennifer Sinco Kelleher)

Credit: The Associated Press

Jeffrey Wong, the Hawaii Emergency Management Agency's current operations officer, shows computer screens monitoring hazards at the agency's headquarters in Honolulu on Friday, July 21, 2017. Hawaii is the first state to prepare the public for the possibility of a ballistic missile strike from North Korea. (AP Photo/Jennifer Sinco Kelleher)

Credit: The Associated Press

FILE - In this July 4, 2017, file photo distributed by the North Korean government, North Korean leader Kim Jong Un, second from right, inspects the preparation of the launch of a Hwasong-14 intercontinental ballistic missile (ICBM) in North Korea's northwest. Hawaii is the first state to prepare the public for the possibility of a ballistic missile threat from North Korea. The state's Emergency Management Agency on Friday, July 21, 2017 announced a public education campaign. Agency Administrator Vern Miyagi says because it would take a missile about 15 minutes to arrive, there won't be much time to prepare. He says that's why instructions are simple: "Get inside, stay inside and stay tuned." (Korean Central News Agency/Korea News Service via AP, File)

Credit: The Associated Press

FILE - This July 4, 2017 file photo, distributed by the North Korean government shows what was said to be the launch of a Hwasong-14 intercontinental ballistic missile in North Korea. Hawaii is the first state to prepare the public for the possibility of a ballistic missile threat from North Korea. The state's Emergency Management Agency on Friday, July 21, 2017 announced a public education campaign. Agency Administrator Vern Miyagi says because it would take a missile about 15 minutes to arrive, there won't be much time to prepare. He says that's why instructions are simple: "Get inside, stay inside and stay tuned." (Korean Central News Agency/Korea News Service via AP, File)

HONOLULU — Hawaii is the first state to prepare the public for the possibility of a ballistic missile strike from North Korea.

The state's Emergency Management Agency on Friday announced a public education campaign about what to do. Hawaii lawmakers have been urging emergency management officials to update Cold War-era plans for coping with a nuclear attack as North Korea develops nuclear weapons and ballistic missiles that can reach the islands.